Printing-telegraph system.



A. H. ADAMS 31. A. F. DIXON. PRINTING TELEGRAPH SYSTEM. APPLIGATION rum) DBG.20,191Z. nnmwnn 00122. 1912 W/fn ess es: M van fora A r/hur H A dams.

A. H. ADAMS & A. P. DIXON.

PRINTING TELEGRAPH SYSTEM.

APPLICATION FILED DEC. 20, 1912. RENEWED 001222, 1913. 1,086,695.

4 ,V mn mm mw A b Mm mH d V 8 HUS m m UNITED STATESEiEPENT OFFICE.

ARTHUR H. ADAMS, OE BRI ISS'ELS, BELGIUM, AND AMOS F. DIXON, OF NEWARK, NEW I JERSEY, ASSIGNORS T WESTERN ELECTRIC COMPANY, OF flEVL YORK, N. 2., A

CORPORATION OF ILLINoIs.

PRINTING-TELEGRAPH SYSTEM.

Specification of Letters Patent.

Patent-ed Feb. 10, 1914.

Application filed December 20, 1912, Serial No. 737,851. Renewed October 22. 1913. SerialNo. 796,733.

- States, residing at Brussels, in the Kingdom of Belgium, hid at Newark, in the county of Essex and State of New Jersey, respectively,.liave invented a certain new and useful Improvement in Printing-'lelegraph Systems, of which the following is a full,-

clcar, concise, andexact description.

This invention relates to printing 'telegraphs, and more particularly to'aprinting telegraph reoeiver'in which the characters are selected and the other necessary opera.- tions controlled by a combination of two impulses received over either one or both of two main line conductors, and in which the second impulse of a combination is never of the same character as that of the first.

The object of this invention is to provide a printing telegraph apparatus of the above type, which is reliable, rapid and ellicicnt in operation and which will perform all the necessary functions with a small number of elements.

"Po the above cnd type controlling magnets provided with two windings are arranged in groups, each winding of a magnet being in a dill'crcnl group. hleans are also provided whereby the first impulse received selects and holds energized agroup of windings oontaiuiu; one winding oi the. desired mag:- nct; and a second impulse selects and holds energized a second group of windings cont ainingv the otlur winding: of the desired magnet. Novel means are likewise provided torlhc controllingot the printing operation and the various other functions to be performed.

This invention will bod'ullv understood from the following description taken in conncclion with the acwnnpanyiug drawings, in which v Figures 1 and combined illustrate diagrammatically a complete receiving system,

I and in which so much of the mechanical details as are necessary touudcrstand the opcration the-roof are shown in perspective.

The invention is shown operating in connection with theselecting apparatus covered by the copending application otOscar Danielson, Serial No. 760,232, tiled April 10, l9l3, although it may be used in connection with other selecting circuits, as for on ample, that covered by patent to C. E. Scribner and A. H. Adams, No. 1,056,0(24, dated March 18, 1913.

In Fig. 1 the main line conductors L are shown connected to polarized relays 1, 2 and 3, 4, respectively. The relays are polarized by means of a current furnished by a battery 5. Connected with the a rmature contact of the polarized relays and 3 are aplnrality of branches of magnets and relays which are adapted to be selected in a predetermined arrangement upon the receipt of a combination of impulses over the L and main line conductors, llie windings of these magnets and relays a1 arranged in two groups or branches, the upper branch containing, for example, the upper windings of the type magnets 3.1, 91, G1 and 51, and the reset relay 41, together .with the winding of a string relay 10; the lower branch containing the lower windings of type magnets 1G, 15, 14. 13 and .12. The other upper branches are provided with string relays 20 to (30, and each string relay isadapted upon encrgizationto close a locking through a branch? of. lower windings.

The typemagnets are arranged in a circle about the type shaft (3, which carries a type wheel -7 as shown at the rigiht of Fig. 2. Each magnet is provided with an armature 8 which adapted when attracted to pro jQ-Ct an end thereof into the path of a lever 9 carried by the shaft 6. The type wheel 7 is thereby arrested in a position to presenta predetermined character to the printing platen; An impulse arriving over one or both of the main line conductors passes through and energizes one or a group of the polarized relays of a selecting means, which, in turn, closes a. circuit through an upper branch of type magnet windings and a string relay. The string relay isthereupon ener-,

tate in the direction of the arrow in Fig. 2..

A second impulse of the combination arriving at either one or both of the main line conductors passes through and energizes-a different one or group of the polarized relays circuitand thereupon closes a. circuit through another branch or group of type magnet wind iugs. One type magnet now has both of its 'windlngs energized and attracts tsaima- 4 selecting a predetermined type magn t,

current by a second impulse of negative ourarmature of the relay 1, guard relay 102, to

I windings'oftype"magnets 31, 32, 34, and

l battery 101 through the windings of the 105 remains locked u 1 the string relay 30.

printed by a combination of "two impulses 1 consisting of posltivecurrent over line con- 'the, positively polarized relay 3 to ground L pa'ssesthrough the upper winding of the v in the same direction as the flux in the cone string relay 30 is energized it attracts its normal. The Starting relay 105 is energized tunes to arrest the type wheel 7.

A "suflicient description of the circuit and ap aratus will appear from the operat on the shift, space, reset and paper lift magnetsA Let' it be assumed that the operator at t-li e distant end of the main line conductors dc,- sifes to print the character D, and furthei assume that the character D isselected an ductorL followed after an interval of no rent'over line conductor L. \Vhen the positive impulse over lineconductor L is sent from the distant. station it passes through and back tobattery at the transmitting station. A positive impulse over line conductor relay 3,'and the magnetic flux through the core of said relay 'caused by this impulse is caused by the constant current fromthe bat- 5, with the result that the armature of' relay is attracted, closing a circuit which may be traced from battery 101, through the upper winding of the type inagnetsj53, 63, 13, 23 and 43, in series in the ordergmamed, thestring relay 30, armature of the relay 3,

ground and back to battery. When the armature completing a circuit frombattery 101, hrough the type magnets 53, 63,- 13,23,

tring relay 30 as'above named, lower 36 in series theorder named, conductor 103, conductOrTO P, starting relay 105, armature of the clearing out relay 106, to'ground and back to battery. Theguard relay 102 also draws up "its armature but performs no function at this stage of' e selection beyond shunting the starting relay 105 and preventing its operation until thecessation of the impulse, The first impulse is now at an end and the polarized relay 3 returns to attracting its armature, closingv a circuit which may 'be'traced from battery 107, starting. magnet 108, armature of the starting relay 105, to ground and back to battery. The starting magnet 108 attracts its armature 109, which moves the pa 1 110 from engagement withthe ratchetlll allowing the type shaft 6.-to revolv'eunder \the influence of spring 112'. The circuit traced from the varioustypemagnets andthe starting relay at the armature of be second impulse of "the assumed combination .of impulses was negativebattery impressed on line conductor L and as a result of this impulse the negatively polarized relay-2 is energized. attracting its armature. The energization of the relay 2, when It attracts'its armature, closes a circuit from battery 1 15, reset relay 41,

upper windings of type magnets 52, 62, 12, 3 2 and the paragraph rela 42 in series in the order named, string re of the relay 2, through the guard relay 102, to ground and back to battery. Thev completion of this circuit causes the energization of the guard relay 102, and the string relay 20. The former by' attracting its armature, prevents the printing operation from being performed until after the completion of the second impulse. Theattraction of the armature of string relay 20 closes a circuit'for he lower windings of type magnets 21, 23, 4,25 and 26 from ground at the armature f the clearing-out relay 106. It will be ted, however, that the string of windings 1 st named forms a bridge between the circ" it, which includes the upper and lower w ndings of the type magnets, closed at the ail-{nature of string relay 30 and the circuit in l uding the upper windings of the type gnets'in series with the winding of string rel the armature of any type magnet therein ill not \be attracted even though current is flbwing through the other winding thereof. Also it will be observed that a stronger ay 20, armature 3 2l0; The amoufitof-current flowing ug i' this bridge .is, therefore, so small curi ent' than that in the bridge circuit is no flowing thr ugh each of the windings of t e type-magnet 32, which thereupon attracts its armatur* and the outer end of armature 8 thereof s, moved upwardly into the path of the arm 8 attached to,th e now rotating type shaft 6; cont cts with the outer mi of said armature the t pe/shaft -6 is stopped in such position th t the selected character on the type" wfiee 7 is in proper position to print the chara ter selected.- At t: cessation of the secon impulse of the combination, the armat ire of the guard NM 102 is retracted, olosin a circuit which ma be traced from batter? 116, armature of th guard relay 102, condu tor 117, clearing-out, relay 06, upper windi of the spacelocki relay 118, Conductor 119, printing magn it 120, arm 9 on the ty shaft 6, the end of he selected type magnet, armature 8, to groiind and back to battery. The closure of thi circuitlaocomplishes I$he following: The rinting magnet ind when the arm 9' p ergized atv I go tractinglt s armatnre breaking the selecting cireuitzforithe selected type magnet." The energiza'tion' and locking up of the spaceloclg; relay. 118 is 'to' insure that thespacing ma'gnet 1221will perform its function irrespective of what happens to the sel ct-ing cir- -icui t flfhelclosum of the circuit through the fspfig llg ma'gnet 122 will therefore cause it toi attractits armature 124, and the pawl 125 oh ';the arm 126, contacting with the ratchet 12?", rotates the drum 128 thus mov- ,ing}the--paper carriage forward through the space of one character to insure a clean surface on which to print the next succeeding .15 characterQ- 1 4 'Pheienergization of the clearing-out re'lay closcs'a circuit through the retractor re-' rages; which maybe traced from=battery 136 -retraetor relay 135, armatureof-thc clearing-out; relay 10b, to ground and back battery.'- The rctraclor relay 1'35;attra s" armature and closes a circuit whi c h =-n 2y ;trii'c ed"from batter-y- 137, ret-ra tur nagactti'r' relay 135, to ground and back to batiiiaghtil ilgwhich attracts its armaturemovf-jing'fthe pawl 110'at the end thereof into'en- I tiwith the ratchet- 111 on the type andfr'otatiiigthe'same in adireetion in I s' normaI direction o'f'rot'ation u fiicie t distaneefitobreak the contact described as existing between the r r, r n .t ype magnet. the selected type magnet has been deener'gized' by'the breakmg g the selecting circuitrat the armature of th v caring-out relay 10t," this armature will eturncd at once toflnormal positiozn '4 The oval of the arm 9 from engagement .With' th'e fentl of thearmature Shreaks the circuitfrom battery 116', through the clearings-out relay 106, the space-lock relay 118,

' and printing magnet 120. The c'learing out 5 relay lflfiuand printing magnet 120 allow their armatures to return to normal position, but, tliear nature of the space-lock relay 118 wills-till. be attracted as it will be'remeinberedllhat a locking circuitfor said.relay 'exists from battery 121, through its lower \llinding-andarmaiure. lVhen the armature 1240f the spacing magnet- 122 is fully at-' t-racted, the arm lelO thereon brings springs .14 1 into engagement with each other,.w hich closes ashunt'aroundthe space-lock relay 118, which thereupon releasesits armaturebreaking the encrgizing'eircuit for the spac ingimrguct 122. Immediately the armature 124 is retracted, contact-is'broken between the springs 141 destroying the shunt which was-plamd around the -relay 118, and all parts of the device return to normal positionf l. he other characters. may be selected -aildprinted in a manner analogous to that described above for the letter D.

i so

current; The first impulse of this combinathrough the upper windings of type magnets net" 138,-5conduct0r 139, armature of the rcl tery, in this manner energizing the retractorndi t-he endfof t-he armature of the l If it is desired to print any of the characters shown on the lower row of type, it is nccessarythat a combination of impulses be sent froxn the transmitting station to select and operate the type shift magnet' H-fi. The Y combination of impulses to. accm'nplish this result is a negative impulscorer line maulowcd by apositire vimpulse orer linps L and L" simultaneously, the two impulses being separated by the usual interval of no tion energizes the negatively polarized relay 4, which attracts its armature and completes a circuit from battery H6, upper winding of the shift-lock relay 11-7, conductor. 148,.

54, (34, 14-, 2-1;, 34 in series n theorderjnamcd, string relay 40, armature of the relay 4, guard relay 102, to ground and backto. battery. The string relay 40 is energizcd'at-. tractipgits armatures, the attraction of the lower armature of the string relay. 40 comrelay, typo magnets, string relay40, through cornluctor 149, the -lo wer .windingsof para graph relay 42, reset relay 41, vs lacing relay 43, shift relay 45, backshift re ay 46, conductor-10+, conductor-150, upper armature of-the stringrchry lt), conductor 151, armature of the starting relay 105, armature of the clearing-out relay 105, to groundand '-back to battery. It will be noted-thatthis circuit provides a shunt about the winding, of the starting relay 105, preventing its operations The circuits just traced remain locked up after the cessation of the first im- P l I 11 The second impulse was assumed to, be positive battery over lines L and L simultaueously, and this impulse will energize the positively polarized relays l and 3 which attract their armaturcs, closing a circuit which may be traced from battery 101, through the upper windings of type magnets 65, 15, 25 and35, ill-series in the order named, shift relay 45, string relay 50, upper armature of the polarized relay 3, lower armature of the polarized 'rclay 1, guard relay 102 to ground and backto battery; The string relay 50 attracts its armature but as in the selection of a type magnet the lower windings of type magnets 51, 52, 53, 5'1 and 56 farm a bridge across the selecting branches and receive a small amount of current. It will be noted that current is .now, passingthrough botlrwindings of the shift relay'45, which thereupon attracts its armaturcs v.with the following'result: A cireuitis closed through the shift-lock relay vconductor 152, armature of shift 'relay 45,

to ground and back to battery, in this manner preparinga path for current from battery 146 to the shift magnet 145. At the cessationv of the second impulse of the combination of impulses the clearing-out relay 106 is energized, by current through,a cir;-" cuit from battery 116, armature of guard relay 102, conductor 117, clearing-out relay 106, conductor 153, resistance 154, con ductor 155 to ground atfthe armature of the shift relay 45, sendin the selecting circuit back to normal, andt e shunt aroundthe shift magnet 145 is broken at'the armature of the shift relay 45,'energizingthetype shift magnet' 145 through the follow.- ing circuit: battery 146, the lower winding of the shift lock relay. 147,, conductor 156, type-.shift magnet 145, conductor-157,

armature of the backshift elay 46, con-- ductor 158, armature of'the' reset relay 41, to round and back to battery. The typeshi t magnet 145 attracts its armature 160 movinmtype wheel 7 longitudinally of the type siaft 6 {and bringing the lower row of characters thereon/into printing position. The energizing-circuit 'of the type shift magnet-145 remains closed or locked up at the armatures of-the reset relay .41- and backshift relay '46 until one or the other of said relaysis energized.

7 If it is desired to send thetype wheel 7 back to its normal position without resetting the paper carriage, a combination of im-; pulses is sent from the-distant station to select and energize the backshift relay 46 which attracts its-armature breaking the locking circuit for the type shifomagnet 145, which retracts its armature 160, forcing the type wheel 7 longitudinally. of the type shaft 6 and bringing thelowerlrow of char-" acters on said type wheel into printing po -sition. The cleariug-out relay is energized after the cessation of the second impulse by current' flowing from battery 116,.

armature of guard relay. 102, conductor 1 117, clearing-out relay 106, conductor 153,

resistance 154, upper armature of shift-. lock relay 147, ar'mature ofl back-shift relay 46, armature of resetrelay 41 to ground and: back to battery. The energization of the 'clearlng-out relay sends the apparatus back to normal as hereinbefore described.

To protide a space between-successive words a combination of impulses is sent from ,the distant station to select and ene'rj?" gize the spacing relay 43,. closing a circuit from battery 116,: armature of guardrela "102, conductor 117, clearing-out relay 10 energizing winding of space lock relay 118' armatur pf-spagjng relay 43., armature .oi reset relay 41, to ground and back to battery. The closure of 'tlii circuit energizes clearing out relay 106 sending the selecting circuit back to normal. Also it energizes the space lockyelay 118 whiclrattracts its 55 armatureclosing a circuit which maybe 'equal to the' space .of one character.

traced from battery 121, spacing magnet 122,-

conductor 123, armature and holding winding of the space lock relay 118," armature of they reset relay41, to ground and back to battery. The closure of -(thiscircuit causes a momentary energization" of the spacing magnet 122, whi h"attracts its armature'124, moving theawl 125 on the arm 126 into engagement with the ratchet 127, moving-the sanie in the direction of the arrow shown-in Fig. 2, winding-the cord 161 on the drum 128, and moving the carriage 162 across the machine through a distanfie T e turning of the drum 128 increases the ten sion in the spring 163, as the carriage is moved forward stepby step, either in re spouse, to anenergization of. the .s acing magnet alone, or the spacing magnet n1 connection with any printing cycle, sufiiciently .-to insure a return of the carriage to normal.

upon the energization of the reset magnet 164.. The space-lock relay 118-actsin this selection, as inthe ordinary type selection, tovinsure that the spacing magnet 122 will perform its function. The paper carriage 162 may be reset from any part of its stroke, aid to accomplish this the reset relay 41 is selected and energized. The energization of the reset relay 41 causes it to attract its armature and -"closes a circuitwhich may beitraoed from battery 165 reset-magnet 164, conductoril66, armature oi the reset relay 41, to ground and back .to' battery. The closure of this circuit ener- -gizes there'sctma net 164 which attracts its armature 167, an'(f thein 168, coming into engagement with the si e of the slot 169 on the .pivot-arm170, moves the end thereof out from'engagement with the ratchet 127,

and the spring 163-rotates the drum 128 returning. the carriage 162 to its normal position.

,When the end of a line has been reached and itis desired not only to return the paper carriage to its normal position but to.move the paper or record medium across the face of thepaper carriage to provide a clean surface on which to print the succeeding line of characters, it is necessary to send-from the distant station such" a combination of impulses as will select 'andoperate the para- 'raph relay 42 It'will be noted thata coms'ult willv not only select and operate the of ilnp'ulss to aocom lish this result is a negativeixnlse ove e L? followed by a second negatiye -impulse line L. The first impulse of this combination bytnergizing relaay; upper win 'ng's 54, 64, 14, 24,34, string ref lay 40, lower windings 42, 41, 43, 45, 46 and at its'cessation, a shunt is placed around the lhination of impulses to accomplish this 're.v

v I paragraph relay42, but will also select and j fORGIhfG the reset relay" 41. Th'ecombination 4, closes a circuit through the I starting relay 105 to-prevent the release of the type shaft, as has been hereinbefore described. The second impulse of the combination energizes the relay 2, closing a circuit which may be traced from battery 115, upper windings 41, 52, 62, 12, 32, 42, in series in the order named, string relay 20, top armatures of therelays 2 and 4, guard relay 102, to ground and back to battery. Current is now passingthrough both windings of the relays 42 and 41, and their arinatures are attracted. The attraction of the armature of reset relay 41 closes a circuit which may be traced from battery 165, reset magnet 164, conductor 166, armature of reset relay 41, to ground and back to battery. The reset magnet 164 attracts its armature 167, and the pin 168 thereon coming into engagement with side of the slot 169, moves the pawl 170 out'of engagement with the ratchet 127, allowing the drum 128 to rotate under the influence of its spring, and the carriage 162 is moved to its normal or initial position by the cord 161. 0

When the carriage 162 returns to its normal position, the pin 171, on the drum 12S, moves into engagement with the pin 172, forcing the arm 173 rearward and moving the contact spring 174 into engagement with the contact spring 175, and completing a circuit which may be traced from battery 180, the magnets 181 of the paper-lift mechanism 182, conductor 183, armature of the paragraph relay 42, conductor 184, contact springs 174 and 175, conductor 185, conduc tor 166, armature of the reset relay 41, to

. ground and back to battery. The closure of this circuit energizes the magnets 181, and,

the slidable arm 18"- of the paper-lift mechanism moves forward into engagementwith the pivoted arm 188, gripping the paper therebelzwcen and lifting the paper upward across the face of the paper carriage 162 a suflicient distance to insure a clean surface on the paperor record medium for the succeeding line of characters. When the armature 189 of the paperdift mechanism 182 is attracted the insulating button 190 on the end of one arm of the angularmeinber 191' forces the contact spring 192 into engage ment with the contact spring 193, closing a circuit which may be traced from battery 116, conductor 117, clearingout relay 106, conductor 153, resistance 154, conductor 155, conductor 194. contact springs 192 and 193 to-gronnd and back to battery. energizing thereby the clearing-out relay 106, which at.- tracts its armature breaking the selecting circuit for the paragraph and reset relays 42 and 41, respectively, and allowing all parts of theselecting circuit to return to normal position.

As there are but thirty distinct combinations of impulses used in this selecting sys tem, and as there are th-irty-'one distinct operations to be performed, it is necessary, in

order to accomplish this result, to have one combination of impulses perform two distinct functions. As all the letters used are on the upper row of characters on the type wheel 7 and as it is never necessary to back shift unless the type Wheel has been shifted and locked in shifted position, the combination of impulses that willselect and en ergize the back shift relay 46 has also been used to select and energize the Z type magnet.

fore slightly different from the selection and operation of any of the other.v type magnets, and this selection and operation will now be described. It will be assumed, of course, that the type-Wheel is in its normal sition, that is, with the upper row of chancters thereon in printing position.

The combination of impulses to select and operate the Z type magnet (and the back shift relay 46) is a negatite impulse over line L'-' followed by a negative impulse ar-Z 4 riving simultaneously over lines L and L'". A negative impulse over line L" passes through the upper winding of the elay 4,

' and the-armature of said relay is attracted closing a circuit which may be traced from battery 146, the upper. or holding winding of the shift-lock relay 147, conduct0r148, type magnets 54, 64, 14, 24 and 34 in series in the order named, string relay 40, armatures of the relays 2 and 4, guard re'lay 102, to ground and back to battery. As the circuit from this battery only passes through the holding winding of the shift-lock relay 147, this relay is not operated but the string relay 4-0, which is in the circuit traced, attracts both its armatures, closing at its lower armature a circuit which may be traced from said armature, through theiconductor 149,

paragraph relay 42, reset relay 41, spacing The operation of selecting and energizing the Z type magnet is thereof the clearing-out relay 106, to ground and back to battery. Theupper armature of said string relay 40 closes a break point in a shunt circuit around the starting relay 105,. preventing said relay from operating. This shunt circuit may be traced from the resistance 201. through conductor 150, upper arn'iaturc of string relay 40, conductor 151, to the ain'iiiturc of the start ng relay 105.

The second impulse of the combination of impulses. ei-.crgizcs both of the negatively polarized relays 2 and 4 which attract-their armatures and complete a circuit which may be traced from battery 146, through the upper winding of the shift-lock relay147, conductor 148. conductor 2-02, through the windings of the type magnets 56, 16, 26, 36 and 46. in series in the order named, through f the string relay 60, lower armature of the l reiay 2, and upper armature of the relay 4, i

through the guard relay 102 to ground and back to battery. The relay 46, it will-be noted, has current passing through both its windings, and a circuit is closed which may be traced from battery 107, starting magnet 108, the 2 type ma net 203, upper armature of the shift-lock relay 147, armature of the relay 46, armature of the reset relay 41, to ground and back to battery. It will be noted at this point that the selection just described is slightly different from the ordinary type selection in that the starting magnet for starting the rotation of the typeshaft 6 is operated simultaneously with the attraction of the armature of the Z type magnet 20-23: that is, the type shaft 6 is not released until after the beginning of the second impulse of the selecting combination, whereas in the ordinary type selection it is released at the end of the first impulse. carried by the now rotating shaft 6 strikes the end of the armature 8 of the Z type magnet 203 the type wheel is stopped in a position to print this character, and at the C05,

sation of the second impulse. a circuit is completed through the clearing-out relay 106, space-lock relay 118 and printing magnet. 120 as hereinbefore described. The operation of the clearing-out relay 10G restores the selecting circuit to normal condition and causes the operation of the retractor magnet 138 as in the ordinary type selection.

\Vhat we claim is: y

1. In a. printing telegraph system, a plurality of branch circuits; a plurality of type magnets therein, each having two windings, the two windings for each of said magnets in different branches; means in one of said plurality of branches for closing a circuit through a second of said branches; and means for consecutively closing said first branch and a third of said plurality of branches to energize both windings of a pro (lQiCll'Illllt'tl type magi'ict.

2. In a printing telegraph system. a plurality of branch circuits; a plurality of type magnets therein, each having two windings the two windings for each of said magnets in ditfcrent branches; means for closing one of said plurality of branches: means in said branch for closing and holding closed a magnets therein, each having two windings,

the two windings for each of said magnets in difierent branches; a rotatable type shaft carrying a pluratity of characters thereon; means controlled by both of said windings for stopping said shaft to bring any of said When the arm 9.

branch for starting the rotation of said shaft; and a clearing-out relay operated after the printing operation to restore the selecting circuit to normal.

4. In a printing telegraph system, the combination of a plurality of branch circuits;

a plurality of type magnets therein, each having two windings, the two windings of each of said magnets in different branches; a rotatable type shaft carrying a plurality of charactersthereon; means controlled by both of said windings for stopping said shaft to bring any of said characters into printing position; selective means actuated by two consecutive impulses for closing one of said plurality of branches on the first impulse to energize one winding of a predetermined type magnet; a relay in said branch for closing a second of said branches; a third branch closed by the second impulse to energize the second winding of a predetermined type magnet; and a relay controlled by said selective means for delaying the printing until after the cessation of the second impulse.

5. In a printing telegraph system, a plurality of branch circuits; a plurality of relays therein, each having two windings, the two windings of each relay in different branches; a rotatable type shaft carrying a plurality of characters thereon; means in a plurality of said branches for closing a sec- 0nd of said plurality of branches to ener-' gize one winding of a predetermined relay; a starting relay in said second branch; means controlled thereby for starting the rotation of said type shaft; and means in another of said plurality of branches for closing an addit ional branch to energize the second winding'of a predetermined relayfor preventing the actuation of said starting relay.

G. In a printing telegraph system, a Inrality of branch circuits; a plurality o relays therein, each having two windings, the two windings of each relay in different branches; a rotatable type shaft carrying a plurality of characters thereon; a starting magnet; means controlled thereby for starting the rotation of said type shaft; means for closing one of said plurality of branches; means therein for closing a second of said plurality of branches to energize one winding of a predetermined relay and control means for closing a third of sai a of branches to energize the second winding of a predetermined relay; and an armature controlled by said predetermined relay for stopping said type shaft in position to print a predetermined character.

In a printing telegraph system, the combination of a selecting circuit comprising a plurality of branches; a plurality of type magnets therein; each having two windings, the two windings for each of said magnets in different branches; a rotatable type shaft carrying a plurality of characters thereon;

- means controlled by both said windings for stopping said shaft to bring any of said charactersinto printing position; means in one of said plurality of branches for closing a second of said pluralit'y of branches; selecting means controlled by two consecutive impulses for consecutively closing one of said first branches and a third of said plurality of branches to energize both windings of a predetermined type magnet to control said type shaft stopping means; a relay in said secondly closed branch; means controlled thereby for starting the rotation of said shaft; a clearing-out relay operating after the printing operation to restore the selecting circuit to normal; and a guard relay controlled by said selecting means for delaying the operation of said clearing-out relay until after the cessation of the second impulse actuating the selecting means.

' In witness whereof, I hereunto subscribe my name, this 6th day of December A. D.

ARTHUR H. ADAMS. \Vitnesses:

FRANK TooHEY, G. DE HERSY.

In witness whereof, I hereunto subscribe my name this 17th day of December A. D.

AMOS F. DIXON. Witnesses O. D. M. GUTHE, WALTER F. HOFFMAN. 

